Improvement in egg-hatching apparatus



l. STAUNE.

Elgg-Hatching Apparatus.

910,152,430.' PatentedJune`23,1874.`

UNITED STATES PATENT OFFICE.

JAMESSTONE, OF LONDON, ENGLAND.

IMPROVEMENT IN EGG-HATCHING APPARATUS.

Specification forming part of Letters Patent N0. 152,430, dated June 23,1871]; application tiled September 10, 1872.

To all whom fit may concern:

Be it known that I, JAMES STONE, of London, England, h ave invented acertain new or Improved Incubator or Apparatus for Hatching Eggs, ofwhich the following is a specification:

This invention is au incubator of simple construction,consisting mainlyot a hotwater vessel having proper inlet and outlet pipes, an egg-traylocated above the hot-water vessel, and an intermediateregulating-valve.

The incubator, which is illustrated on the accompanying drawings,consists mainly ot' two boxes, l 2, placed one within the other,

so as to leave a clear space of about an inch or so at every partbetween them, which is` filled with any suitable non-conductor ot' heat,3. The lower part of thc'inner box 2 contains a metal vessel, 4, (aspace of about an inch or so being leftbetween them, and filled in withthe non-conducting material 3,) which is filled with hot water or othersuitable heated liquid once in, say, every twelve hours, and above whichis placed a tray, 5, to contain the eggs for incubation. The heat isgraduated, and air admitted thereto, as required, by means of aperforated lid capable ot' adjustment over a grating or perforations atthe top of the outer box. A similar arrangement is also provided betweenthe vessel 4 and the tray 5. It consists of two thin perforated piecesot wood, G

7, one sliding over the other, and actuated by means ot a thumb ormilled-head screw, 8, passing through one side of the boxes. The liquidis admitted to and drawn from the vessel by pipes, cocks, or taps 10 11,suitablyT arranged for such purposes.

By the employment of hot water, which is introduced through the inletl0, and Withdrawn, as itsvtemperature becomes reduced, through theoutlet ll, the requisite heat is admitted to the eggs in the tray above,the intermediate valve being' employed to determine the amount received.

Having thus fully described my invention, what I claim is- In anincubator of substantially the described construction, the combinationof the hot-water vessel 4, having the inlet and outlet pipes, asdescribed, andthe tray 5, with the intermediate valve 6, asset forth.

In testimony whereof I have signed my naine to this specification in thepresence of two subscribing witnesses.

' JAMES STONE. Vitnesses Bnis'row HUNT,

Patent Agent and Solicitor,

1 Scrl@ street, Lineol/117s Imc, London. J. EDWARD HILL,

Clerk to Bristow Hunt,

l Scrl@ street, Lfz'owolns Ina, London.

